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Ultrasonic signal time-frequency decomposition for borehole evaluation or pipeline inspection
Ultrasonic signal time-frequency decomposition for borehole evaluation or pipeline inspection
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机译:超声波信号时频分解,用于钻孔评估或管道检查
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摘要
In some embodiments, methods, apparatus, and systems may operate to launch acoustic waves along a first acoustic path length from an acoustic transducer. The apparatus receives a reflected signal in response to each acoustic wave, each reflected signal including at least one echo. The reflected signal is decomposed, using a time-frequency decomposition method with basis functions, into a wavelet associated with each echo. Parameters describing each associated wavelet are determined and a borehole evaluation or pipeline inspection is performed based on the parameters.
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